title
Functions in Go

Functions

Since Go is a compiled language, we can write the function that should be executed, after the calling function. No problem.

func main() {
   greet()
}

func greet() {}

For the return-statement, we MUST define a datatype.

func greet() string {
   return "Hi max"
}

Calling Functions from other files

main.go:

package main

import "fmt"

func main() {
   greet()
}

person.go:

package main

import "fmt"

func greet() {
   fmt.Println("Hey Max")
}

Both need to have the package main. The trick is now, to run both files, leading to main.go can access what is inside of person.go

go run main.go person.go

go build main.go person.go